Add 30/10 and 42/20
1st number: 3 0/10, 2nd number: 2 2/20
30/10 + 42/20 is 51/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
30/10 = 30 × 2/10 × 2 = 60/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
42/20 = 42 × 1/20 × 1 = 42/20 - Add the two like fractions:
60/20 + 42/20 = 60 + 42/20 = 102/20 - 102/20 simplified gives 51/10
- So, 30/10 + 42/20 = 51/10
In mixed form: 51/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/10+42/20 30/10+84/20 30/20+42/20 30/10+42/40 90/10+42/20 30/10+42/60 30/50+42/20 30/70+42/20